Last update:
Thu Feb 10 07:32:32 MST 2022
Anonymous Forward . . . . . . . . . . . . . . . . 1--3
W. Wilson A New Type of High Power Vacuum Tube . . 4--17
George A. Campbell Direct Capacity Measurement . . . . . . 18--38
H. M. Trueblood The Relation of the Petersen System of
Grounding Power Networks to Inductive
Effects in Neighboring Communication
Circuits . . . . . . . . . . . . . . . . 39--59
James J. Pilliod Philadelphia--Pittsburgh Section of the
New York--Chicago Cable . . . . . . . . 60--87
John R. Carson and
J. J. Gilbert Transmission Characteristics of the
Submarine Cable . . . . . . . . . . . . 88--115
I. B. Crandall and
D. MacKenzie Analysis of the Energy Distribution in
Speech . . . . . . . . . . . . . . . . . 116--128
Harvey Fletcher The Nature of Speech and Its
Interpretation . . . . . . . . . . . . . 129--144
Anonymous Contributors to This Issue . . . . . . . 145--146
George A. Campbell Physical Theory of the Electric
Wave-Filter . . . . . . . . . . . . . . 1--32
R. V. L. Hartley and
Thornton C. Fry The Binaural Location of Complex Sounds 33--42
John R. Carson The Heaviside Operational Calculus . . . 43--55
R. L. Wegel The Physical Characteristics of Audition
and Dynamical Analysis of the External
Ear . . . . . . . . . . . . . . . . . . 56--68
Edward C. Molina The Theory of Probabilities Applied to
Telephone Trunking Problems . . . . . . 69--81
W. C. Helmle The Relation Between Rents and Incomes,
and the Distribution of Rental Values 82--109
E. T. Hoch Power Losses in Insulating Materials . . 110--116
Lloyd Espenschied Application to Radio of Wire
Transmission Engineering . . . . . . . . 117--141
J. B. Johnson A Low Voltage Cathode Ray Oscillograph 142--151
Anonymous Contributors to this Issue . . . . . . . 152--153
Otto J. Zobel Theory and Design of Uniform and
Composite Electric Wave-filters . . . . 1--46
J. N. Kirk Specializing Transportation Equipment in
Order to Adapt it Most Economically to
Telephone Construction and Maintenance
Work . . . . . . . . . . . . . . . . . . 47--66
A. B. Clark Telephone Transmission Over Long Cable
Circuits . . . . . . . . . . . . . . . . 67--94
George A. Campbell Probability Curves Showing Poisson's
Exponential Summation . . . . . . . . . 95--113
J. N. Kirk Bell System Sleet Storm Map . . . . . . 114--121
J. E. Harris and
E. E. Schumacher Measurements on the Gases Evolved from
Glasses of Known Chemical Composition 122--132
Anonymous Contributors to this Issue . . . . . . . 133
Ray S. Hoyt Impedance of Smooth Lines, and Design of
Simulating Networks . . . . . . . . . . 1--40
Arthur F. Rose Practical Application of Carrier
Telephone and Telegraph in the Bell
System . . . . . . . . . . . . . . . . . 41--52
E. B. Craft and
L. F. Morehouse and
H. P. Charlesworth Machine Switching Telephone System for
Large Metropolitan Areas . . . . . . . . 53--89
R. V. L. Hartley Relations of Carrier and Side-Bands in
Radio Transmission . . . . . . . . . . . 90--112
I. W. Green and
J. P. Maxfield Public Address Systems . . . . . . . . . 113--142
W. H. Martin and
A. B. Clark Use of Public Address System with
Telephone Lines . . . . . . . . . . . . 143--161
Anonymous The Contributors to this issue . . . . . 162--163
John R. Carson and
Otto J. Zobel Transient Oscillations in Electric
Wave-filters . . . . . . . . . . . . . . 1--52
J. N. Kirk Use of Labor-saving Apparatus in Outside
Plant Construction Work . . . . . . . . 53--76
Helene C. Bateman A Method of Graphical Analysis . . . . . 77--100
H. D. Arnold and
G. W. Elmen Permalloy, A New Magnetic Material of
Very High Permeability . . . . . . . . . 101--111
Charles S. Demarest Telephone Equipment for Long Cable
Circuits . . . . . . . . . . . . . . . . 112--140
H. W. Nichols and
Lloyd Espenschied Radio Extension of the Telephone System
to Ships at Sea . . . . . . . . . . . . 141--185
Anonymous The Contributors to this Issue . . . . . 186--187
George A. Campbell Mutual Impedances of Grounded Circuits 1--30
Robert W. King Thermionic Vacuum Tubes and Their
Applications . . . . . . . . . . . . . . 31--100
K. K. Darrow Some Contemporary Advances in Physics 101--115
H. D. Arnold and
Lloyd Espenschied Transatlantic Radio Telephony . . . . . 116--144
Harvey Fletcher Physical Measurements of Audition and
Their Bearing on the Theory of Hearing 145--180
Anonymous Contributors to this Issue . . . . . . . 181--182
S. P. Shackleton and
H. W. Purcell Relays in the Bell System . . . . . . . 1--42
W. A. Shewhart Some Applications of Statistical Methods
to the Analysis of Physical and
Engineering Data . . . . . . . . . . . . 43--87
E. C. Molina and
R. P. Crowell Deviation of Random Samples from Average
Conditions and Significance to Traffic
Men . . . . . . . . . . . . . . . . . . 88--99
Francis F. Lucas Photomicrography and Technical
Microscopy in Its Application to
Telephone Apparatus . . . . . . . . . . 100--144
J. G. Ferguson A Clock-Controlled Tuning Fork as a
Source of Constant Frequency . . . . . . 145--157
Karl K. Darrow Some Contemporary Advances in Physics-II 158--178
Anonymous Contributors to this issue . . . . . . . 179--180
H. T. Friis and
A. G. Jensen High Frequency Amplifiers . . . . . . . 181--205
D. D. Miller Design Characteristics of Electromagnets
for Telephone Relays . . . . . . . . . . 206--231
I. B. Crandall and
C. F. Sacia A Dynamical Study of the Vowel Sounds 232--237
E. B. Wheeler Humidity Recorders . . . . . . . . . . . 238--258
Ronald M. Foster A Reactance Theorem . . . . . . . . . . 259--267
Karl K. Darrow Some Contemporary Advances in Physics
--- III . . . . . . . . . . . . . . . . 268--298
R. L. Wegel and
C. R. Moore An Electrical Frequency Analyzer . . . . 299--323
H. Nyquist Certain Factors Affecting Telegraph
Speed . . . . . . . . . . . . . . . . . 324--346
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in the Bell System
Technical Journal . . . . . . . . . . . 347--350
Anonymous Contributors to this Issue . . . . . . . 351--352
W. H. Harden Electrical Tests and Their Applications
in the Maintenance of Telephone
Transmission . . . . . . . . . . . . . . 353--392
John R. Carson A Generalization of the Reciprocal
Theorem . . . . . . . . . . . . . . . . 393--399
W. H. Martin The Transmission Unit and Telephone
Transmission Reference Systems . . . . . 400--408
C. W. Smith Practical Application of the Recently
Adopted Transmission Unit . . . . . . . 409--413
Ray S. Hoyt Impedance of Loaded Lines, and Design of
Simulating and Compensating Networks . . 414--467
Karl K. Darrow Some Contemporary Advances in Physics-IV 468--494
H. H. Nance Some Very Long Telephone Circuits of the
Bell System . . . . . . . . . . . . . . 495--507
J. W. Horton Vacuum Tube Oscillators --- a Graphical
Method of Analysis . . . . . . . . . . . 508--524
Anonymous Abstracts of Technical Papers . . . . . 525--528
Anonymous Contributors To This Issue . . . . . . . 529--530
H. A. Frederick and
H. F. Dodge `The Stethophone,' An Electrical
Stethoscope . . . . . . . . . . . . . . 531--549
George A. Campbell Mathematics in Industrial Research . . . 550--557
John R. Carson The Building-up of Sinusoidal Currents
in Long Periodically Loaded Lines . . . 558--566
Otto J. Zobel Transmission Characteristics of Electric
Wave-Filters . . . . . . . . . . . . . . 567--620
Karl K. Darrow Some Contemporary Advances in Physics
--- V Electricity in Solids . . . . . . 621--650
Ronald M. Foster Theorems Regarding the Driving-Point
Impedance of Two-Mesh Circuits . . . . . 651--685
Anonymous Contributors to this Issue . . . . . . . 686--687
F. L. Rhodes Engineering Cost Studies . . . . . . . . 1--14
George Crisson The Limitation of the Gain of Two-Way
Telephone Repeaters by Impedance
Irregularities . . . . . . . . . . . . . 15--25
W. H. Harden Practises in Telephone Transmission
Maintenance Work . . . . . . . . . . . . 26--51
K. S. Johnson and
T. E. Shea Mutual Inductance in Wave Filters with
an Introduction on Filter Design . . . . 52--111
Karl K. Darrow Some Contemporary Advances in Physics
--- VI Electricity in Gases . . . . . . 112--151
W. V. Wolfe Carrier Telephony on High Voltage Power
Lines . . . . . . . . . . . . . . . . . 152--177
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in the Bell System
Technical Journal . . . . . . . . . . . 178--183
Anonymous Contributors to this Issue . . . . . . . 184--185
H. E. Ives and
J. W. Horton and
R. D. Parker and
A. B. Clark The Transmission of Pictures over
Telephone Lines . . . . . . . . . . . . 187--214
H. W. Nichols and
J. C. Schelleng Propagation of Electric Waves over the
Earth . . . . . . . . . . . . . . . . . 215--234
T. C. Smith Open Tank Creosoting Plants for Treating
Chestnut Poles . . . . . . . . . . . . . 235--264
John R. Carson Selective Circuits and Static
Interference . . . . . . . . . . . . . . 265--279
Karl K. Darrow Some Contemporary Advances in Physics
--- VII Waves and Quanta . . . . . . . . 280--326
Sallie Pero Mead Wave Propagation Over Parallel Tubular
Conductors: The Alternating Current
Resistance . . . . . . . . . . . . . . . 327--338
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 339--346
Anonymous Contributors to this Issue . . . . . . . 347--348
F. Gill Oliver Heaviside . . . . . . . . . . . . 349--354
Oliver E. Buckley The Loaded Submarine Telegraph Cable . . 355--374
Harvey Fletcher Useful Numerical Constants of Speech and
Hearing . . . . . . . . . . . . . . . . 375--386
Charles W. Carter, Jr. Graphic Representation of the Impedance
of Networks Containing Resistances and
Two Reactances . . . . . . . . . . . . . 387--401
A. S. Curtis The Vibratory Characteristics and
Impedance of Telephone Receivers At Low
Power Inputs . . . . . . . . . . . . . . 402--406
Karl K. Darrow Some Contemporary Advances in Physics
--- VIII The Atom-Model, First Part . . 407--458
Lloyd Espenschied and
C. N. Anderson and
Austin Bailey Transatlantic Radio Telephone
Transmission . . . . . . . . . . . . . . 459--507
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 508--511
Anonymous Contributors to this Issue . . . . . . . 512--513
H. P. Charlesworth General Engineering Problems of the Bell
System . . . . . . . . . . . . . . . . . 515--541
G. A. Pennock Engineering Planning for Manufacture . . 542--560
George Crisson Irregularities in Loaded Telephone
Circuits . . . . . . . . . . . . . . . . 561--585
Irving B. Crandall The Sounds of Speech . . . . . . . . . . 586--626
C. F. Sacia Speech Power and Energy . . . . . . . . 627--641
Karl K. Darrow Some Contemporary Advances in Physics IX
The Atom-Model, Second Part . . . . . . 642--684
John R. Carson Electric Circuit Theory and the
Operational Calculus . . . . . . . . . . 685--761
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 762--765
Anonymous Contributors to this Issue . . . . . . . 766--767
Bancroft Gherardi and
Robert W. King Joseph Henry, The American Pioneer in
Electrical Communication . . . . . . . . 1--10
W. A. Shewhart Correction of Data for Errors of
Measurement . . . . . . . . . . . . . . 11--26
Harvey Fletcher The Theory of the Operation of the
Howling Telephone with Experimental
Confirmation . . . . . . . . . . . . . . 27--49
John R. Carson Electric Circuit Theory and the
Operational Calculus Chapter VI,
Propagation of Current and Voltage Along
the Non-Inductive Cable . . . . . . . . 50--95
Karl K. Darrow Some Contemporary Advances in Physics-X,
The Atom-Model, Third Part, A Very Brief
Recapitulation of What Has Gone Before 96--142
Ralph Bown and
DeLoss K. Martin and
Ralph K. Potter Some Studies in Radio Broadcast
Transmission . . . . . . . . . . . . . . 143--213
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 214--218
Anonymous Contributors in this Issue . . . . . . . 219--220
Thomas Shaw and
William Fondiller Development and Application of Loading
for Telephone Circuits . . . . . . . . . 221--281
H. T. Friis A Static Recorder . . . . . . . . . . . 282--291
Ronald M. Foster Directive Diagrams of Antenna Arrays . . 292--307
W. A. Shewhart Correction of Data for Errors of
Averages Obtained from Small Samples . . 308--319
Herbert E. Ives The Alkali Metal Photoelectric Cell . . 320--335
John R. Carson Electric Circuit Theory and the
Operational Calculus Chapter IX, The
Finite Line with Terminal Impedances . . 336--384
Anonymous Abstracts of Recent Technical Papers
from Bell System Sources . . . . . . . . 385--389
Anonymous Contributors to this Issue . . . . . . . 390--391
C. F. Sacia and
C. J. Beck The Power of Fundamental Speech Sounds 393--403
J. J. Gilbert Extraneous Interference on Submarine
Telegraph Cables . . . . . . . . . . . . 404--417
R. B. Shanck Neutralization of Telegraph Crossfire 418--432
F. B. Llewellyn Operation of Thermionic Vacuum Tube
Circuits . . . . . . . . . . . . . . . . 433--462
Karl K. Darrow Contemporary Advances in Physics --- XI
--- Ionization . . . . . . . . . . . . . 463--492
J. P. Maxfield and
H. C. Harrison Methods of High Quality Recording and
Reproducing of Music and Speech Based on
Telephone Research . . . . . . . . . . . 493--523
Anonymous Abstracts of Recent Technical Papers
from Bell System Sources . . . . . . . . 524--525
Anonymous Contributors to this Issue . . . . . . . 526--527
S. E. Anderson Radio Signaling System for the New York
Police Department . . . . . . . . . . . 529--538
John R. Carson Wave Propagation in Overhead Wires with
Ground Return . . . . . . . . . . . . . 539--554
E. T. Hoch Electrode Effects in the Measurement of
Power Factor and Dielectric Constant of
Sheet Insulating Materials . . . . . . . 555--572c
F. C. Willis and
L. E. Melhuish Load Carrying Capacity of Amplifiers . . 573--592
W. A. Shewhart Quality Control Charts . . . . . . . . . 593--603
Frances Thorndike Applications of Poisson's Probability
Summation . . . . . . . . . . . . . . . 604--624
S. D. Wilburn Line Current Regulation in Bridge Polar
Duplex Telegraph Circuits . . . . . . . 625--635
H. W. Hitchcock Carrier-Current Communication on
Submarine Cables . . . . . . . . . . . . 636--651
Anonymous Abstracts of Recent Technical Books And
Papers From Bell System Sources . . . . 652--659
Anonymous Contributors to this Issue . . . . . . . 660--661
John R. Carson Electromagnetic Theory and the
Foundations of Electric Circuit Theory 1--17
J. Davidson Toll Switchboard No. 3 . . . . . . . . . 18--26
P. G. Edwards and
H. W. Herrington The Location of Opens in Toll Telephone
Cables . . . . . . . . . . . . . . . . . 27--54
Karl K. Darrow Contemporary Advances in Physics --- XII
Radioactivity . . . . . . . . . . . . . 55--99
Irving B. Crandall Dynamical Study of the Vowel Sounds,
Part II . . . . . . . . . . . . . . . . 100--116
Lloyd Espenschied Radio Broadcast Coverage of City Areas 117--141
W. J. Shackelton A Shielded Bridge for Inductive
Impedance Measurements at Speech and
Carrier Frequencies . . . . . . . . . . 142--171
Anonymous Letters to the Editor . . . . . . . . . 172--180
Anonymous Abstracts of Recent Technical Papers
from Bell System Sources . . . . . . . . 181--183
Anonymous Contributors to this Issue . . . . . . . 184--185
John R. Shea and
Samuel McMullan Developments in the Manufacture of
Copper Wire . . . . . . . . . . . . . . 187--216
C. R. Moore and
A. S. Curtis An Analyzer for the Voice Frequency
Range . . . . . . . . . . . . . . . . . 217--229
A. G. Landeen Analyzer for Complex Electric Waves . . 230--247
Ralph Brown Transatlantic Radio Telephony . . . . . 248--257
W. P. Mason A Study of the Regular Combination of
Acoustic Elements, with Applications to
Recurrent Acoustic Filters, Tapered
Acoustic Fibers, And Horns . . . . . . . 258--294
Karl K. Darrow Contemporary Advances in Physics-XIII.
Ferromagnetism . . . . . . . . . . . . . 295--366
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 367--371
Anonymous Contributors to this Issue . . . . . . . 372--373
J. G. Ferguson Measurement of Inductance by the
Shielded Owen Bridge . . . . . . . . . . 375--386
J. J. Gilbert Determination of Electrical
Characteristics of Loaded Telegraph
Cables . . . . . . . . . . . . . . . . . 387--401
A. A. Clokey Automatic Printing Equipment for Long
Loaded Submarine Telegraph Cables . . . 402--424
Austen M. Curtis The Application of Vacuum Tube
Amplifiers to Submarine Telegraph Cables 425--441
Eugene Peterson and
Herbert P. Evans Modulation in Vacuum Tubes Used As
Amplifiers . . . . . . . . . . . . . . . 442--460
Edward C. Molina Application of the Theory of Probability
To Telephone Trunking Problems . . . . . 461--494
John R. Carson and
Ray S. Hoyt Propagation of Periodic Currents Over a
System Of Parallel Wires . . . . . . . . 495--545
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 546--548
Anonymous Contributors to this Issue . . . . . . . 549--550
Herbert E. Ives Television . . . . . . . . . . . . . . . 551--559
Frank Gray and
J. W. Horton and
R. C. Mathes The Production on Utilization of
Television Signals . . . . . . . . . . . 560--604
H. M. Stoller and
E. R. Morton Synchronization of Television . . . . . 604--615
D. K. Gannett and
E. I. Green Wire Transmission System for Television 616--632
Edward L. Nelson Radio Transmission System for Television 633--652
Karl K. Darrow Contemporary Advances in Physics. XIV
Introduction to Wave Mechanics . . . . . 653--701
R. L. Young Power Plants for Telephone Offices . . . 702--721
W. A. Shewhart Quality Control . . . . . . . . . . . . 722--735
S. B. Wright and
H. C. Silent The New York--London Telephone Circuit 736--749
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 750--751
Anonymous Contributors to this Issue . . . . . . . 752--754
E. C. Wente and
E. H. Bedell The Measurement of Acoustic Impedance
and the Absorption Coefficient of Porous
Materials . . . . . . . . . . . . . . . 1--10
John R. Carson The Rigorous and Approximate Theories of
Electrical Transmission Along Wires . . 11--25
Paul P. Coggins Some General Results of Elementary
Sampling Theory for Engineering Use . . 26--69
W. J. Shackelton and
J. G. Ferguson Electrical Measurement of Communication
Apparatus . . . . . . . . . . . . . . . 70--89
C. J. Davisson The Diffraction of Electrons by a
Crystal of Nickel . . . . . . . . . . . 90--105
Eugene Peterson and
Clyde R. Keith Grid Current Modulation . . . . . . . . 106--139
E. C. Wente and
A. L. Thuras A High Efficiency Receiver for a
Horn-Type Loud Speaker of Large Power
Capacity . . . . . . . . . . . . . . . . 140--153
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 154--158
Anonymous Contributors to this Issue . . . . . . . 159--160
Anonymous Joint Meeting of the Institution of
Electrical Engineers and the American
Institute of Electrical Engineers . . . 161--167
O. B. Blackwell Transatlantic Telephony --- the
Technical Problem . . . . . . . . . . . 168--186
K. W. Waterson Transatlantic Telephony --- Service and
Operating Features . . . . . . . . . . . 187--194
Sallie Pero Mead Phase Distortion and Phase Distortion
Correction . . . . . . . . . . . . . . . 195--224
Oliver E. Buckley High-Speed Ocean Cable Telegraphy . . . 225--267
John R. Carson The Present Status of Wire Transmission
Theory and Some of its Outstanding
Problems . . . . . . . . . . . . . . . . 268--280
Karl K. Darrow Contemporary Advances in Physics --- XV
The Classical Theory of Light, First
Part . . . . . . . . . . . . . . . . . . 281--320
C. D. Hart Recent Developments in the Process of
Manufacturing Lead-Covered Telephone
Cable . . . . . . . . . . . . . . . . . 321--342
J. Herman Bridge for Measuring Small Time
Intervals . . . . . . . . . . . . . . . 343--349
H. F. Dodge A Method of Rating Manufactured Product 350--368
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 369--372
Anonymous Contributors to this Issue . . . . . . . 373--374
J. H. Kasley and
F. P. Hutchison Precision Tool Making for the
Manufacture of Telephone Apparatus . . . 375--403
C. R. Englund The Natural Period of Linear Conductors 404--419
J. G. Ferguson and
B. W. Bartlett The Measurement of Capacitance in Terms
of Resistance and Frequency . . . . . . 420--437
Otto J. Zobel Distortion Correction in Electrical
Circuits with Constant Resistance
Recurrent Networks . . . . . . . . . . . 438--534
R. V. L. Hartley Transmission of Information . . . . . . 535--563
H. A. Affel and
C. S. Demarest and
C. W. Green Carrier Systems on Long Distance
Telephone Lines . . . . . . . . . . . . 564--629
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 630--635
Anonymous Contributors to this Issue . . . . . . . 636--637
George A. Campbell The Practical Application of the Fourier
Integral . . . . . . . . . . . . . . . . 639--707
C. W. Robbins Automatic Machine Gaging . . . . . . . . 708--729
Karl K. Darrow Contemporary Advances in Physics, XVI
The Classical Theory of Light, Second
Part . . . . . . . . . . . . . . . . . . 730--761
Eugene Peterson Harmonic Production in Ferromagnetic
Materials at Low Frequencies and Low
Flux Densities . . . . . . . . . . . . . 762--796
Edward B. Craft Airways Communication Service . . . . . 797--807
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 808--813
Anonymous Contributors to this Issue . . . . . . . 814
W. H. Martin Decibel--The Name for the Transmission
Unit . . . . . . . . . . . . . . . . . . 1--2
H. S. Osborne The Principles of Electric Circuits
Applied to Communication . . . . . . . . 3--20
G. W. Elmen Magnetic Properties of Perminvar . . . . 21--40
H. O. Siegmund The Aluminum Electrolytic Condenser . . 41--63
Karl K. Darrow Contemporary Advances in Physics, XVII,
The Scattering of Light with Change of
Frequency . . . . . . . . . . . . . . . 64--93
John R. Carson Ground Return Impedance: Underground
Wire with Earth Return . . . . . . . . . 94--98
E. C. Molina Application to the Binomial Summation of
a Laplacian Method for the Evaluation of
Definite Integrals . . . . . . . . . . . 99--108
W. P. Mason A New Method for Obtaining Transient
Solutions of Electrical Networks . . . . 109--134
L. G. Bostwick Acoustic Considerations Involved in
Steady State Loud Speaker Measurements 135--158
Halsey A. Frederick Recent Advances in Wax Recording . . . . 159--172
Donald MacKenzie Sound Recording with the Light Valve . . 173--183
H. M. Stoller Synchronization and Speed Control of
Synchronized Sound Pictures . . . . . . 184--195
E. O. Scriven A Sound Projector System for Use in
Motion Picture Theaters . . . . . . . . 196--208
Anonymous Abstracts of Bell System Technical
Papers Not Appearing in this Journal . . 209--213
Anonymous Contributors to this Issue . . . . . . . 214--216
C. J. Davisson Electrons and Quanta . . . . . . . . . . 217--224
R. R. Williams and
E. J. Murphy The Predominating Influence of Moisture
and Electrolytic Material Upon Textiles
as Insulators . . . . . . . . . . . . . 225--242
H. H. Glenn and
E. B. Wood Purified Textile Insulation for
Telephone Central Office Wiring . . . . 243--256
J. R. Townsend Telephone Apparatus Springs: A Review of
the Principal Types and the Properties
Desired of These Springs . . . . . . . . 257--266
J. Herman Effect of Signal Distortion on Morse
Telegraph Transmission Quality . . . . . 267--285
J. B. Johnson A Braun Tube Hysteresigraph . . . . . . 286--308
Austin Bailey and
S. W. Dean and
W. T. Wintringham The Receiving System for Long-Wave
Transatlantic Radio Telephony . . . . . 309--367
W. A. Marrison Oscillographs for Recording Transient
Phenomena . . . . . . . . . . . . . . . 368--390
Karl K. Darrow Contemporary Advances in Physics, XVIII,
The Diffraction of Waves by Crystals . . 391--428
Anonymous Abstracts of Technical Articles From
Bell System Sources . . . . . . . . . . 429--432
Anonymous Contributions to this Issue . . . . . . 433--434
G. W. Elmen Magnetic Alloys of Iron, Nickel, and
Cobalt . . . . . . . . . . . . . . . . . 435--465
C. J. Davisson and
L. H. Germer A Test for Polarization of Electron
Waves by Reflection . . . . . . . . . . 466--481
W. O. Pennell A Generalization of Heaviside's
Expansion Theorem . . . . . . . . . . . 482--492
W. A. Marrison A High Precision Standard of Frequency 493--514
F. R. Lack Observations on Modes of Vibration and
Temperature Coefficients of Quartz
Crystal Plates . . . . . . . . . . . . . 515--535
W. H. Martin and
C. H. G. Gray Master Reference System for Telephone
Transmission . . . . . . . . . . . . . . 536--559
J. G. Ferguson Shielding in High-Frequency Measurements 560--575
John R. Townsend and
Charles H. Greenall Fatigue Studies of Non-Ferrous Sheet
Metals . . . . . . . . . . . . . . . . . 576--590
L. H. Germer An Application of Electron Diffraction
to the Study of Gas Adsorption . . . . . 591--604
Anonymous Abstracts of Technical Articles From
Bell System Sources . . . . . . . . . . 605--610
Anonymous Contributions to this Issue . . . . . . 611--612
H. F. Dodge and
H. G. Romig A Method of Sampling Inspection . . . . 613--631
E. C. Molina and
R. I. Wilkinson The Frequency Distribution of the
Unknown Mean of a Sampled Universe . . . 632--645
L. J. Sivian Speech Power and Its Measurement . . . . 646--661
W. Howard Wise Asymptotic Dipole Radiation Formulas . . 662--671
Karl K. Darrow Statistical Theories of Matter,
Radiation and Electricity . . . . . . . 672--748
J. R. Townsend and
W. A. Straw Physical Properties and Methods of Test
For Some Sheet Non-Ferrous Metals . . . 749--805
H. Fletcher and
J. C. Steinberg Articulation Testing Methods . . . . . . 806--854
Anonymous Abstracts of Technical Articles from
Bell System Sources . . . . . . . . . . 855--859
Anonymous Contributors to this Issue . . . . . . . 860--861